Progress in Monte Carlo calculations of Fermi systems: normal liquid 3He
Statistical Mechanics
2009-10-31 v1
Abstract
The application of the diffusion Monte Carlo method to a strongly interacting Fermi system as normal liquid He is explored. We show that the fixed-node method together with the released-node technique and a systematic method to analytically improve the nodal surface constitute an efficient strategy to improve the calculation up to a desired accuracy. This methodology shows unambiguously that backflow correlations, when properly optimized, are enough to generate an equation of state of liquid He in excellent agreement with experimental data from equilibrium up to freezing.
Cite
@article{arxiv.cond-mat/9909099,
title = {Progress in Monte Carlo calculations of Fermi systems: normal liquid 3He},
author = {Joaquim Casulleras and Jordi Boronat},
journal= {arXiv preprint arXiv:cond-mat/9909099},
year = {2009}
}
Comments
14 pages, 3 eps figures